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¡ INNOVATIVE DESIGN & PROTOTYPE TESTING are key components of GENERAC’S success in “IMPROVING POWER BY DESIGN.” But it doesn’t stop there. Total commitment to component testing, reliability testing, environmental testing, destruction and life testing, plus testing to applicable CSA, NEMA, EGSA, and other standards, allows you to choose GENERAC POWER SYSTEMS with the confidence that these systems will provide superior performance.
¡ TEST CRITERIA: PROTOTYPE TESTED NEMA MG1-22 EVALUATION SYSTEM TORSIONAL TESTED MOTOR STARTING ABILITY
¡ SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION. This state-of-the-art power maximizing regulation system is standard on all Generac models. It provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching the surge loads to the engine. Digital voltage regulation at ±1%.
¡ SINGLE SOURCE SERVICE RESPONSE from Generac’s extensive dealer network provides parts and service know-how for the entire unit, from the engine to the smallest electronic component.
¡ GENERAC TRANSFER SWITCHES. Long life and reliability are synonymous with GENERAC POWER SYSTEMS. One reason for this confidence is that the GENERAC product line includes its own transfer systems and controls for total system compatibility.
INCLUDES:
• Two Line LCD Tri-Lingual Digital Nexus™ Controller
• Isochronous Electronic Governor
• Sound Attenuated Enclosure
• Closed Coolant Recovery System
• Smart Battery Charger
• UV/Ozone Resistant Hoses
• ±1% Voltage Regulation
• Natural Gas or LP Operation*
• 2 Year Limited Warranty
• UL 2200 Listed
* Note: 25-45 kW units are field convertible between natural gas or LP. 60 kW units are built per fuel requirement and are not convertible.
Standby Power Rating
Model QT025 (Steel - Bisque) - 25 kW 60 HzModel QT030 (Steel - Bisque) - 30 kW 60 HzModel QT045 (Steel - Bisque) - 45 kW 60 Hz
Model QT060 (Steel - Bisque or Aluminum - Gray) - 60 kW 60 Hz
FEATURES
GUARDIAN® SERIESStandby Generators
Liquid-Cooled Gas Engine
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Guardian® Series
Meets EPA Emission Regulations25, 30 & 45 kW CA/MA emissions compliant
60 kW not for sale in CA/MA
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25 • 30 • 45 • 60 kW application & engineering data
GENERATOR SPECIFICATIONSType Synchronous
Rotor Insulation Class H
Stator Insulation Class H
Telephone Interference Factor (TIF) <50
Alternator Output Leads 1-Phase 4 wire
Alternator Output Leads 3-Phase 6 wire
Bearings Sealed Ball
Coupling Flexible Disc
Excitation System Direct
VOLTAGE REGULATIONType Electronic
Sensing Single Phase
Regulation ± 1%
GOVERNOR SPECIFICATIONSType Electronic
Frequency Regulation Isochronous
Steady State Regulation ± 0.25%
ELECTRICAL SYSTEM
Battery Charge Alternator12 Volt 15 Amp-25 & 30 kW
12 Volt 30 Amp-45 & 60 kW
Static Battery Charger 2 Amp
Recommended Battery Group 26, 525CCA
System Voltage 12 Volts
GENERATOR FEATURESRevolving field heavy duty generatorDirectly connected to the engineOperating temperature rise 120 °C above a 40 °C ambientClass H insulation is rated at 150 °C rise at 25 °C ambientAll models fully prototyped tested
ENCLOSURE FEATURESSteel weather protective enclosure with aluminum roof (all models) or aluminum weather protective enclosure (available on 60 kW only)
Ensures protection against mother nature. Electrostatically applied textured epoxy paint for added durability.
Enclosed critical grade muffler
Quiet, critical grade muffler is mounted inside the unit to prevent injuries.
Small, compact, attractive Makes for an easy, eye appealing installation.
SAE Sound attenuated enclosure ensures quiet operation.
ENGINE SPECIFICATIONS: 25 & 30 kWMake Generac
Model In-line
Cylinders 4
Displacement (Liters) 1.5
Bore (in/mm) 3.05/77.4
Stroke (in/mm) 3.13/79.5
Compression Ratio 11:1
Intake Air System Naturally Aspirated
Lifter Type Hydraulic
ENGINE SPECIFICATIONS: 45 & 60 kWMake Generac
Model In-line
Cylinders 4
Displacement (Liters) 2.4
Bore (in/mm) 3.41/86.5
Stroke (in/mm) 3.94/100
Compression Ratio 9.5:1
Intake Air SystemNaturally Aspirated (45 kW) or
Turbocharged/Aftercooled (60 kW)
Lifter Type Hydraulic
ENGINE LUBRICATION SYSTEMOil Pump Type Gear
Oil Filter Type Full flow spin-on cartridge
Crankcase Capacity (qt/l) 4/3.8
ENGINE COOLING SYSTEMType Closed
Water Pump Belt driven
Fan Speed (rpm)
2484 - 25 & 30 kW
1865 - 45 kW
2100 - 60 kW
Fan Diameter (in/mm)17.7/449.6 (25 & 30 kW) or
22/558.8 (45 & 60 kW)
Fan ModePusher (25 & 30 kW) or
Puller (45 & 60 kW)
FUEL SYSTEMFuel Type Natural gas, propane vapor
Carburetor Down Draft
Secondary Fuel Regulator Standard
Fuel Shut Off Solenoid Standard
Operating Fuel Pressure 5-14" water column/9-26 mm HG
(All ratings in accordance with BS5514, ISO3046, ISO8528, SAE J1349 and DIN6271)
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25 • 30 • 45 • 60 kW operating data
GENERATOR OUTPUT VOLTAGE/kW - 60 HzkW LPG Amp LPG kW Nat. Gas Amp Nat. Gas CB Size (Both)
QT025
120/240 V, 1Ø, 1.0 pf 25 104 25 104 125
120/208 V, 3Ø, 0.8 pf 25 87 25 87 100
120/240 V, 3Ø, 0.8 pf 25 75 25 75 90
QT030
120/240 V, 1Ø, 1.0 pf 30 125 30 125 150
120/208 V, 3Ø, 0.8 pf 30 104 30 104 125
120/240 V, 3Ø, 0.8 pf 30 90 30 90 100
QT045
120/240 V, 1Ø, 1.0 pf 45 188 45 188 200
120/208 V, 3Ø, 0.8 pf 45 156 45 156 175
120/240 V, 3Ø, 0.8 pf 45 135 45 135 150
277/480 V, 3Ø, 0.8 pf 45 68 45 68 80
QT060
120/240 V, 1Ø, 1.0 pf 60 250 60 250 300
120/208 V, 3Ø, 0.8 pf 60 208 60 208 250
120/240 V, 3Ø, 0.8 pf 60 180 60 180 200
277/480 V, 3Ø, 0.8 pf 60 90 60 90 100
SURGE CAPACITY IN AMPSVoltage Dip @ < .4 pf
15% 30%
QT025
120/240 V, 1Ø 86 209
120/208 V, 3Ø 84 204
120/240 V, 3Ø 73 177
QT030
120/240 V, 1Ø 109 264
120/208 V, 3Ø 109 264
120/240 V, 3Ø 94 229
QT045
120/240 V, 1Ø 61 153
120/208 V, 3Ø 64 160
120/240 V, 3Ø 55 139
277/480 V, 3Ø 29 72
QT060
120/240 V, 1Ø 95 237
120/208 V, 3Ø 100 251
120/240 V, 3Ø 87 218
277/480 V, 3Ø 42 105
ENGINE FUEL CONSUMPTIONNatural Gas Propane
(ft³/hr) (m³ /hr) (gal/hr) (l/hr)
QT025
Exercise cycle 60 1.7 0.7 2.5
25% of rated load 220 6.3 2.9 9.1
50% of rated load 297 8.4 3.3 12.3
75% of rated load 362 10.3 4 15
100% of rated load 430 12.2 4.7 17.8
QT030
Exercise cycle 60 1.7 0.7 2.5
25% of rated load 240 6.8 2.6 10
50% of rated load 320 9.1 3.5 13.3
75% of rated load 400 11.4 4.4 16.6
100% of rated load 492 14 5.4 20.4
QT045
Exercise cycle 65 1.8 0.7 2.6
25% of rated load 210 6 2.3 8.6
50% of rated load 380 10.8 4.2 15.7
75% of rated load 545 15.5 5.9 22.4
100% of rated load 730 20.7 8 30.1
QT060
Exercise cycle 123 3.5 1.34 5.1
25% of rated load 267 7.6 2.7 10.5
50% of rated load 483 13.7 5 19
75% of rated load 672 19.1 7 26.5
100% of rated load 862 24.5 9 33.9
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STANDBY RATING: Standby ratings apply to installations served by a reliable utility source. The standby rating is applicable to varying loads for the duration of a power outage. There is no overload capability for this rating. Ratings are in accordance with ISO-3046-1. Design and specifications are subject to change without notice.
Note: Fuel pipe must be sized for full load.
For Btu content, multiply gal/hr x 90950 (LP) or ft3/hr x 1000 (NG)
For megajoule content, multiply l/hr x 25.35 (LP) or m³/hr x 37.26 (NG)
Refer to "Emissions Data Sheets" for maximum fuel flow for EPA and SCAQMD permitting purposes.
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25 • 30 • 45 • 60 kW operating data
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POWER ADJUSTMENT FOR AMBIENT CONDITIONS
Temperature Deration ...........................................................................................................3% for every 10 °C above 25 °C or 1.65% for every 10 °F above 77 °FAltitude Deration (25, 30 & 45 kW) .....................................................................................1% for every 100 m above 183 m or 3% for every 1000 ft above 600 ftAltitude Deration (60 kW) ................................................................................................ 1% for every 100 m above 915 m or 3% for every 1000 ft above 3000 ft
CONTROLLER FEATURES
2-Line Plain Text LCD Display ........................................................................................................................................Simple user interface for ease of operation.Mode Switch: Auto ..............................................................................................................................................Automatic Start on Utility failure. 7 day exerciser
Off ...........................................................................................................................Stops unit. Power is removed. Control and charger still operate. Manual ......................................................................................... Start with starter control, unit stays on. If utility fails, transfer to load takes place.
Programmable start delay between 10-30 seconds ............................................................................................................................................................ StandardEngine Start Sequence ..................................................................................................................... Cyclic cranking: 16 sec on, 7 rest (90 sec maximum duration)Engine Warm-up ..................................................................................................................................................................................................................... 5 secEngine Cool-Down ..................................................................................................................................................................................................................1 minStarter Lock-out ................................................................................................................................Starter cannot re-engage until 5 sec after engine has stopped.Smart Battery Charger ........................................................................................................................................................................................................ StandardAutomatic Voltage Regulation with Over and Under Voltage Protection ................................................................................................................................ StandardAutomatic Low Oil Pressure Shutdown ............................................................................................................................................................................... StandardOverspeed Shutdown .............................................................................................................................................................................................. Standard, 72 HzHigh Temperature Shutdown ............................................................................................................................................................................................... StandardOvercrank Protection .......................................................................................................................................................................................................... StandardSafety Fused ...................................................................................................................................................................................................................... StandardFailure to Transfer Protection .............................................................................................................................................................................................. StandardLow Battery Protection ........................................................................................................................................................................................................ Standard50 Event Run Log ............................................................................................................................................................................................................... StandardFuture Set Capable Exerciser .............................................................................................................................................................................................. StandardIncorrect Wiring Protection ................................................................................................................................................................................................. StandardInternal Fault Protection ..................................................................................................................................................................................................... StandardCommon External Fault Capability ...................................................................................................................................................................................... StandardGovernor Failure Protection ................................................................................................................................................................................................ Standard
ENGINE COOLING
25 kW 30 kW 45 kW 60 kW
Air flow (inlet air including alternator and combustion air in cfm/cmm) 2490/70.5 2490/70.5 2725/77.2 3280/92.9
System coolant capacity (gal/liters) 2/7.6 2/7.6 3/11.4 2.5/9.5
Heat rejection to coolant (BTU per hr/MJ per hr) 112,000/118.2 135,000/142.4 193,000/203.6 270,000/284.9
Maximum operation air temperature on radiator (°C/°F) 60/150
Maximum ambient temperature (°C/°F) 50/140
COMBUSTION REQUIREMENTS
Flow at rated power (cfm/cmm) 62/1.8 72/2 144/4.1 180/5.1
SOUND EMISSIONS
Sound output in dB(A) at 23 ft (7 m) with generator in exercise mode* 59 59 61 65
Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load* 72 73 73 72
*Sound levels are taken from the front of the generator. Sound levels taken from other sides of the generator may be higher depending on installation parameters.
EXHAUST
Exhaust flow at rated output (cfm/cmm) 203/5.7 237/6.7 420/11.9 494/14
Exhaust temperature at muffler outlet (°C/°F) 593/1100 610/1130 593/1100 566/1050
ENGINE PARAMETERS
Rated Synchronous rpm 3600
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25 • 30 • 45 • 60 kW available accessories
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Model # Product Description
006175-0 - 25 & 30 kW
005630-0 - 45 & 60 kWCold Weather Kit
If the temperature regularly falls below 32 °F (0 °C), install a cold weather kit to maintain optimal battery temperature. Kit consists of battery warmer with thermostat built into the wrap.
006174-0 - 25 & 30 kW
005616-0 - 45 & 60 kWExtreme Cold Weather Kit
Recommended where the temperature regularly falls below 32 °F (0 °C) for extended periods of time. For liquid cooled units only.
005621-0Auxiliary Transfer Switch Contact Kit
The auxiliary transfer switch contact kit allows the transfer switch to lock out a single large electrical load you may not need. Not compatible with 60 kW models.
005651-0 Base Plug Kit Add base plugs to the base of the generator to keep out debris.
005703-0 - Bisque005704-0 - Gray
Paint Kit*If the generator enclosure is scratched or damaged, it is important to touch-up the paint to protect from future corrosion. The paint kit includes the necessary paint to properly maintain or touch-up a generator enclosure.
006176-0 - 25 & 30 kW
006172-0 - 45 kW
006171-0 - 60 kW
Scheduled Maintenance KitThe Liquid-Cooled Scheduled Maintenance Kits offer all the hardware necessary to perform complete maintenance on Generac liquid-cooled generators.
005928-0 Wireless RemoteCompletely wireless and battery powered, Generac's wireless remote monitor provides you with instant status information without ever leaving the house.
005951-0 Advanced Wireless RemoteRemotely control generator functions with the advanced model’s LCD display. In addition to remote testing of the generator, set the exercise cycle and maintenance interval reminders.
006199-0 PMM Starter Kit
The PMM Starter Kit consists of a 24 VAC, field installed transformer that enables the use of the 24 VAC Power Management Modules (PMMs) and one PMM. The standard controller (without starter kit) can control two HVAC loads with no additional hardware. Not compatible with pre-wired switches.
006186-0Power Management Module (50 Amps)
Power Management Modules are used in conjunction with the Smart Switch to increase its power management capabilities. It gives the Smart Switch additional power management flexibility not found in any other transfer switch. Not compatible with pre-wired switches. Note: PMM Starter Kit required.
006463-1 Mobile Link™
Generac's Mobile Link allows you to check the status of your generator from anywhere that you have access to an Internet connection from a PC or with any smart device. You will even be notified when a change in the generator’s status occurs via e-mail or text message. Note: Harness Adapter Kit required.
006478-0 Harness Adapter KitThe Harness Adapter Kit is required to make liquid-cooled units compatible with Mobile Link™.
* Note: Bisque kits are used in conjunction with steel enclosures. Gray kits are used in conjunction with aluminum enclosures (available on 60 kW units only).
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25 • 30 • 45 • 60 kW interconnections
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NE
UTR
AL
BLO
CK
GR
OU
ND
NOTE
WIR
E OR
IENT
ATIO
NW
ARNI
NG
TRAN
SFER
DC C
OMM
ON
CUSTOMER CONNECTIONS
230 194
+12V
DC
GR
OU
ND
NE
UTR
AL
BLO
CK
LOA
D S
HE
DM
OD
ULE
19423
0
N1N2
E1
E2
NO
TE:
MAT
CH
WIR
EN
UM
BE
RS
TO
TER
MIN
AL
NU
MB
ER
S
ON
N1N2T1/LINENEU
17818323194
T1C
US
TOM
ER
SU
PP
LIE
DN
EU
TRA
L W
IRE
NE
UT
(C2
& V
R2)
(C1
& V
R1)
STA
ND
BY
UTI
LITY
N1
N2
E2
E1
T1T2
019
423
N2
N1
T1E
1E
2T2
N1
N2
T1
FEED
ER S
UPP
LY F
RO
M P
ANEL
(R
EQU
IRES
4-W
IRE
FEED
ER)
PR
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D L
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DC
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TER
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PIC
AL
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SID
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TIA
L/C
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RC
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LIQ
UID
-CO
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D G
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ON
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ON
PA
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L
LIQ
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CO
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D IN
STA
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RTS
TR
AN
SFE
R S
WIT
CH
0 GR
OUND
15B
+12V
23 T
RANS
FER
AIR
1
AIR
2
PRIO
RITY
1
PRIO
RITY
2
PRIO
RITY
3
PRIO
RITY
4
T1
NEUT
RAL
CONT
ACTO
R1
CONT
ACTO
R2
CONT
ACTO
R3
CONT
ACTO
R4
48850-T
Note
: Use
the g
ener
ator's
spec
ific in
stalla
tion m
anua
lan
d wirin
g diag
rams
to ve
rify ge
nera
tor w
iring
conn
ectio
ns, a
s the
y may
diffe
r slig
htly f
rom
illustr
ation
.